Question

In testing a new machine, a factory does an experiment in which 8 workers are randomly selected with 4 being experienced and 4 being less experienced. 2 from each group are assigned to the old machine and 2 to the new machine. They all operate their respective machine for a week and output is recorded. Answer the following questions regarding the results of the experiment. 4. What type of design does the experiment call for? a. completely randomized b. randomized block c. latin square d. factorial 5. How are the degrees of freedom for the error computed where n is the observations in each cell? a. (r-1)(C-1) b. rc(n-1) c. n-1 d. n-k 6. What is the mean square error in the analysis? a. 1.56 b. 3.22 c. 2.50 d. 1.50 7. Get a line graph to show the relationship between the independent variables. What does it show you? a. both machines performed the same b. the new machine performed better than the old c. the low experience workers did better on the old machine d. the low experienced workers did better on the new machine

Answer 1

Sol:

SS df F MS 0.50 P-value 0.6779 Fcrit 7.7086 0.50 1 0.20 ANOVA Source of Variation Sample Columns Interaction Within Total 0.50 1 0.50 0.20 0.6779 7.7086 1 40.50 16.20 0.0158 7.7086 40.50 10.00 51.50 4 2.50 7

4).

Option " b " is correct.

b). randomized block design

5).

Option " b " is correct.

b) .rc(n-1)

6).

Option " c " is correct.

c) .2.50

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